Andrew Ray is a senior technical expert at Sam’s Club Technology. He is passionate about big data and has extensive experience working with Apache Spark and Hadoop. Previously, at Walmart, Andrew built an analytics platform on Hadoop that integrated data from multiple retail channels using fuzzy matching and distributed graph algorithms and led the adoption of Spark from proof of concept to production. He is an active contributor to the Apache Spark project, including SparkSQL and GraphX. Andrew holds a PhD in mathematics from the University of Nebraska, where he worked on extremal graph theory.
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